WO2003064979A1 - Ultrasonic transmitter-receiver and ultrasonic flowmeter - Google Patents

Ultrasonic transmitter-receiver and ultrasonic flowmeter Download PDF

Info

Publication number
WO2003064979A1
WO2003064979A1 PCT/JP2003/000742 JP0300742W WO03064979A1 WO 2003064979 A1 WO2003064979 A1 WO 2003064979A1 JP 0300742 W JP0300742 W JP 0300742W WO 03064979 A1 WO03064979 A1 WO 03064979A1
Authority
WO
WIPO (PCT)
Prior art keywords
matching layer
acoustic matching
ultrasonic
piezoelectric body
receiver
Prior art date
Application number
PCT/JP2003/000742
Other languages
French (fr)
Japanese (ja)
Inventor
Hidetomo Nagahara
Masahiko Hashimoto
Masaaki Suzuki
Kazuhiko Hashimoto
Takashi Hashida
Seigo Shiraishi
Norihisa Takahara
Original Assignee
Matsushita Electric Industrial Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co., Ltd. filed Critical Matsushita Electric Industrial Co., Ltd.
Priority to US10/473,752 priority Critical patent/US7061163B2/en
Priority to CNB038013703A priority patent/CN1318824C/en
Priority to JP2003564529A priority patent/JP3633926B2/en
Priority to EP20030701891 priority patent/EP1416255A1/en
Publication of WO2003064979A1 publication Critical patent/WO2003064979A1/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measuring Volume Flow (AREA)

Abstract

An ultrasonic transmitter-receiver comprises a piezoelectric body 4 that performs ultrasonic vibration; an acoustic matching layer 3 formed of a material whose density is from 50 kg/m3 to 1000 kg/m3 both inclusive and whose acoustic impedance is from 2.5 × 103 kg/m2/s to 1.0 × 106 kg/m2/s both inclusive; a lower acoustic matching layer 9 formed between the piezoelectric body 4 and the acoustic matching layer 3; and a structure support body 6 that supports the lower acoustic matching layer 9 and piezoelectric body 4 and shields the piezoelectric body 4 from ultrasonic propagating fluid. There is provided a protection part that is in contact with at least a portion of a sidewall of the acoustic matching layer 3. This protection part is formed by a part of the lower acoustic matching layer 9 and is integral with the lower acoustic matching layer 9.
PCT/JP2003/000742 2002-01-28 2003-01-27 Ultrasonic transmitter-receiver and ultrasonic flowmeter WO2003064979A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US10/473,752 US7061163B2 (en) 2002-01-28 2003-01-27 Ultrasonic transducer and ultrasonic flowmeter
CNB038013703A CN1318824C (en) 2002-01-28 2003-01-27 Ultrasonic transmitter-receiver and ultrasonic flowmeter
JP2003564529A JP3633926B2 (en) 2002-01-28 2003-01-27 Ultrasonic transceiver and ultrasonic flowmeter
EP20030701891 EP1416255A1 (en) 2002-01-28 2003-01-27 Ultrasonic transmitter-receiver and ultrasonic flowmeter

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2002-018047 2002-01-28
JP2002018047 2002-01-28
JP2002027834 2002-02-05
JP2002-027834 2002-02-05
JP2002-194203 2002-07-03
JP2002194203 2002-07-03

Publications (1)

Publication Number Publication Date
WO2003064979A1 true WO2003064979A1 (en) 2003-08-07

Family

ID=27670269

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2003/000742 WO2003064979A1 (en) 2002-01-28 2003-01-27 Ultrasonic transmitter-receiver and ultrasonic flowmeter

Country Status (5)

Country Link
US (1) US7061163B2 (en)
EP (1) EP1416255A1 (en)
JP (1) JP3633926B2 (en)
CN (1) CN1318824C (en)
WO (1) WO2003064979A1 (en)

Cited By (4)

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WO2005068537A1 (en) * 2004-01-15 2005-07-28 Matsushita Electric Industrial Co., Ltd. Porous body and method for producing same
JPWO2005020631A1 (en) * 2003-08-22 2007-11-01 松下電器産業株式会社 Acoustic matching body, manufacturing method thereof, ultrasonic sensor, and ultrasonic transmission / reception device
JP2009218748A (en) * 2008-03-07 2009-09-24 Panasonic Corp Acoustic matching body, ultrasonic transducer, and ultrasonic flowmeter
JP2013509121A (en) * 2009-10-29 2013-03-07 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Ultrasonic transducer for use in fluid media

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JP2009218748A (en) * 2008-03-07 2009-09-24 Panasonic Corp Acoustic matching body, ultrasonic transducer, and ultrasonic flowmeter
US8413524B2 (en) 2008-03-07 2013-04-09 Panasonic Corporation Acoustic matching member, ultrasonic transmitter/receiver, and ultrasonic flowmeter
JP2013509121A (en) * 2009-10-29 2013-03-07 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Ultrasonic transducer for use in fluid media
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Also Published As

Publication number Publication date
CN1318824C (en) 2007-05-30
CN1578900A (en) 2005-02-09
JP3633926B2 (en) 2005-03-30
EP1416255A1 (en) 2004-05-06
JPWO2003064979A1 (en) 2005-05-26
US20040113522A1 (en) 2004-06-17
US7061163B2 (en) 2006-06-13

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